Nov 19, 2019

Propagation of Tau Pathology: Integrating Insights From Postmortem and In Vivo Studies

Biological Psychiatry
Thomas VogelsMichael Schöll

Abstract

Cellular accumulation of aggregated forms of the protein tau is a defining feature of so-called tauopathies such as Alzheimer's disease, progressive supranuclear palsy, and chronic traumatic encephalopathy. A growing body of literature suggests that conformational characteristics of tau filaments, along with regional vulnerability to tau pathology, account for the distinct histopathological morphologies, biochemical composition, and affected cell types seen across these disorders. In this review, we describe and discuss recent evidence from human postmortem and clinical biomarker studies addressing the differential vulnerability of brain areas to tau pathology, its cell-to-cell transmission, and characteristics of the different strains that tau aggregates can adopt. Cellular biosensor assays are increasingly used in human tissue to detect the earliest forms of tau pathology, before overt histopathological lesions (i.e., neurofibrillary tangles) are apparent. Animal models with localized tau expression are used to uncover the mechanisms that influence spreading of tau aggregates. Further, studies of human postmortem-derived tau filaments from different tauopathies injected in rodents have led to striking findings that recapitula...Continue Reading

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Mentioned in this Paper

Biological Markers
Study
In Vivo
Tauopathies
Positron-Emission Tomography
Neurofibrillary Degeneration (Morphologic Abnormality)
Brain
Alzheimer's Disease
Neuropathology
Body Fluids

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